Vitamin C Inhibits Aggravated Eryptosis by Hydrogen Peroxide in Glucose-6-Phosphated Dehydrogenase Deficiency

Abstract

Background/Aims: The study was aimed to investigate if vitamin C could exert protective effects on development of eryptosis caused by glucose-6-phosphate dehydrogenase (G6PD) deficiency and hydrogen peroxide. Methods: Isolated erythrocytes with different G6PD activity (normal or deficient) were divided into various groups treated by either Vitamin C or H 2 O 2 . Phosphatidylserine (PS) extroversion rate was detected by Annexin V binding. The intracellular Ca 2+ concentration was detected by Fluo3-fluorescence, and western blot was used to detect the expression of apoptosis factor caspase 3. Results: Compared with the blank group, the PS extroversion rate (P < 0.001), intracellular Ca 2+ concentration (P < 0.001) and active caspase 3 expression level (P < 0.05) of erythrocytes significantly increased after treatment of 0.05% H 2 O 2 . Then the index of eryptosis significantly decreased after erythrocytes were treated with Vitamin C (1 mg/ml) for 30 min (all P < 0.05). The decline in erythrocytes with G6PD normal activity was more significant than those with G6PD deficiency. Conclusion: Vitamin C could effectively inhibit the eryptosis contributed by H 2 O 2 oxidative stress, and the suppression on eryptosis with G6PD normal activity was more effective than that with G6PD deficiency.